1. Pistons, Rings & Piston Kits Products
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  3. NAMURA NA-10003K

NAMURA NA-10003K Top End Repair Kit M-001

fits model: Xr400r, Std. make: Honda. year: 1996–2004.

Na-10003k Namura M-001 Top-end Repair Kit For Honda Xr400r 1996-2004 Std Bore

( Brand: Namura ), ( Manufacturer Part Number: NA-10003K ), ( Vendor: Lionparts Powersports ), ( Image Note: Image Is For Reference Only, Actual Product May Vary Slightly. ), ( Ships From: Usa ), ( Handling Time: Approximately 2 Business Days ), ( Oem Or Performance: Performance/aftermarket )

Review NAMURA Top end Repair Kit For Honda Bore fits XR400R STD 1996–2004

Introducing the Namura NA-1003K M-001 Top-End Repair Kit, specifically designed for the Honda XR400R motorcycles manufactured between 1996 and 2004. This standard model repair kit comes with all the essential components to ensure a smooth and efficient top-end rebuild of your Honda XR400R engine.

The kit includes a set of high-quality, OEM-grade piston rings, a cylinder head gasket, and new piston pins. The piston rings are meticulously crafted to provide optimal sealing, ensuring efficient combustion and reducing the likelihood of leaks. The cylinder head gasket is designed to ensure a perfect seal between the cylinder head and the engine block, minimizing the risk of coolant or oil leaks. The piston pins, made of strong and durable material, securely hold the pistons in place, ensuring proper engine function.

Additionally, the Namura NA-1003K M-001 Top-End Repair Kit comes with new piston wrist pins and clips, as well as new compression rings and oil control rings. These components work together to ensure proper piston movement and efficient engine performance. The compression rings help to compress the fuel-air mixture for efficient combustion, while the oil control rings help to prevent oil from entering the combustion chamber, reducing engine wear and improving overall performance.

The kit also includes new valve guides and valve stem seals to ensure proper valve function and sealing. The valve guides provide a smooth surface for the valve stems to move on, while the valve stem seals prevent oil from leaking past the valves and into the cylinders.

Each component in the Namura NA-1003K M-001 Top-End Repair Kit is carefully inspected and manufactured to meet or exceed OEM specifications. By using this kit to rebuild your Honda XR400R engine, you can rest assured that you are using the highest quality components available, ensuring a long-lasting and efficient engine.

In summary, the Namura NA-1003K M-001 Top-End Repair Kit is an essential tool for any Honda XR400R owner looking to rebuild their engine. With high-quality components designed to meet or exceed OEM specifications, this kit provides everything you need to ensure a smooth and efficient engine rebuild.

Pros and Cons of buying a Namura NA-10003K M-001 Top-End Repair Kit for Honda XR400R (1996-2004)

1. Pros:

a. Comprehensive Repair Kit: This kit includes all the necessary parts for a top-end rebuild of a Honda XR400R (1996-2004), making it a convenient one-stop solution for this specific motorcycle model.

b. High-Quality Parts: Namura is a reputable brand known for producing high-quality aftermarket motorcycle parts. This repair kit is expected to provide reliable and durable replacements for worn-out components.

c. Saves Time and Money: By purchasing a complete repair kit, you can save time and potentially money by avoiding the need to order individual parts from various suppliers.

d. Easy Installation: The kit comes with clear instructions, making the installation process more straightforward for DIY enthusiasts.

2. Cons:

a. Expensive: The Namura NA-10003K M-001 Top-End Repair Kit is a premium option and may be more expensive than purchasing individual parts from various suppliers or using OEM (Original Equipment Manufacturer) parts.

b. Limited Compatibility: While this kit is designed for Honda XR400R motorcycles between 1996 and 2004, it might not be compatible with other Honda models or variations within that timeframe.

c. Potential for Over-Engineering: Some riders might argue that aftermarket parts, like those included in this repair kit, can sometimes be over-engineered, leading to unnecessary weight or complexity.

Conclusion:

The Namura NA-10003K M-001 Top-End Repair Kit for Honda XR400R (1996-2004) offers several advantages, including comprehensive coverage, high-quality parts, time and cost savings, and straightforward installation. However, it also comes with some disadvantages, such as a higher price point and limited compatibility. Ultimately, the decision to purchase this repair kit depends on your personal budget, motorcycle maintenance preferences, and the specific requirements of your Honda XR400R.

Recommendation:

If you are a DIY enthusiast looking for a convenient and comprehensive repair solution for your Honda XR400R (1996-2004) and have the budget for it, the Namura NA-10003K M-001 Top-End Repair Kit could be an excellent investment. However, if you are on a tight budget or prefer to use OEM parts, you might want to consider purchasing individual parts from various suppliers instead.

Details:

To ensure you're receiving exactly what you want, some orders are sourced from various shipping facilities. Gaskets: Namura gaskets are manufactured to OE-specs, which means no trimming or fitment issues.: Namura Top-End Repair Kit For HONDA XR400R 1996 2004 STD Bore: Bore. Higher Performance piston without a higher price.

Each design is evaluated against rigid quality-control standards to ensure each set meets or exceeds OE performance. Benefits include increased heat transfer, reduced friction and helping to eliminate cold seizures. Note: Image is for reference only, actual product may vary slightly depending on your vehicle. Minimized piston expansion and contraction.

Includes pistons, rings and top end gasket sets and needle bearings when needed. Our materials are explicitly selected for their temperature, oil, fuel, and coolant-resistant qualities as well tested using ASTM standards. Hard anodized piston crown with a hardness of HRB 105. Free Ground Shipping.

Clutch gaskets are available for certain applications. Bore Size: 84.97mm, Size Over Standard: Standard. MOS2 coating to draw heat through piston walls and out the bottom. Pistons are more resistant to wear and scuffing, expand less with heat stronger.

part #: na10003k prices

  • $75.00-$105.68

specifications pistondon:

  • for models: Xr400r, Std
  • for makes: Honda
  • for years: 1996-2004
  • brand: Namura
  • mpn: Na-10003k
  • vendor: Lionparts Powersports
  • image note: Image Is For Reference Only, Actual Product May Vary Slightly.
  • ships from: Usa
  • handling time: Approximately 2 Business Days
  • oem or performance: Performance/aftermarket

general pistondon:

  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits
  • condition: New

returns pistondon:

  • time: 30 Days
  • paid by: Seller
  • policy: Returns Accepted

payments pistondon:

  • other
  • credit card: Diners-club
  • wallet: Apple-pay

offer pistondon:

  • sold: 0
  • options: Ship-to-home
  • quantity: 5
  • availability: In Stock
  • started: August 18, 2025

seller pistondon:

  • city: Wilmington,
  • # reviews: 220713
  • rating: 99.2%

shipping pistondon:

  • type: Fixed
  • transit: 3-7 Days
  • class: Standard
  • cost: $0.00
  • carrier: FedEx
  • service: FedEx Ground / FedEx Home Delivery
for models: xr400r, std, for makes: honda, for years: 1996-2004, vendor: lionparts powersports, image note: image is for reference only, actual product may vary slightly., ships from: usa, handling time: approximately 2 business days, oem or performance: performance/aftermarket,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > pistons, rings piston kits, sku: 7854510473637623,

Namura NA-10003K Is Similar To:

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5 offers $75.00–$105.68 USD
  • Offer #1: $105.68 price + $0.00 shipping estimate = $105.68* total. Namura Top End Gasket Sets are precision cut Klingersil coated steel head gaskets for better sealing and high-temp resistance. NAMURA TOP END REPAIR KIT.FREE SHIPPING
  • Offer #2: $75.00 price + $0.00 shipping estimate = $75.00* total. With the manufacturer part number NX-10200-6K , this kit ensures a perfect fit and reliable performance for your motorcycle Bought this and was going to install on my Honda.FREE SHIPPING
  • Offer #3: $103.51 price + $0.00 shipping estimate = $103.51* total. 2004-2009 HONDA CRF250R Combine this with the MOS2 coating and hard anodizing, Namura gives you a higher performance piston without the higher price.FREE SHIPPING
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